Access the full text.
Sign up today, get DeepDyve free for 14 days.
Loading next page...
/lp/american-physical-society-aps/screening-effects-in-pair-production-by-10-mev-photons-on-uranium-VG0IQn5ILp
References
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
- Publisher
- American Physical Society (APS)
- Copyright
- Copyright © 1994 The American Physical Society
- ISSN
- 1094-1622
- DOI
- 10.1103/PhysRevA.50.1309
- Publisher site
- See Article on Publisher Site
Abstract
With a partial-wave interpolation method we calculated the positron energy spectra of pair production in the field of uranium atoms for photons of energy k =10 MeV, permitting a comparison of theory with the recent experiment. Our results show that the atomic-electron screening effect decreases the cross section for the main region of the positron energy spectra which contributes to the total pair-production cross section, and the effect can be as large as about 9% for the region of low positron energies which contributes little to the total pair-production cross section. The screening effect to the total pair-production cross section is about 3.5%. Our results also indicate that the approximate treatment of screening through energy-shift screening theory becomes inadequate at this intermediate photon energy, while the approximate treatment of screening through form-factor screening theory is quite good. Our result for the total pair-production cross section is compared with the experimental result.
Journal
Physical Review A – American Physical Society (APS)
Published: Aug 1, 1994